The shells she's wearing are bra-shells with seaweed barely clinging to her décolletage, we're sure.

And while her sexy mermaid tail is far from demure, we are loving her maritime couture…

Because it's for a good cause!

The 25-year-old actress posed for Project Mermaids in July 2013 and a behind-the-scenes video shows her frolicking playfully with another actress, Kim Hidalgo, as the waves crash behind them. The aquatic campaign was launched by two Southern California photographers who utilize images of models and celebrities in an effort to preserve beaches and oceans.

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